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Патент USA US2131705

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Sept. 27, 1938.
2,131,705
c. A. DESIMONE ET AL.
LIQUID DISPENSING APPARATUS
Filed Oct. 29, 1937
27
5 Sheets-Sheet 2
FIG'CI.
Sept. 27, 1938.
2,131,705
c. A‘ DESIMONE ET AL
LIQUID DISPENS ING APPARATUS
Filed Oct. 29, 1937v
5 Sheets—Sheet s
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Sept 27, 1938-
c. A. DESIMONE ET A1.
2,131,705
LIQUID DISPENSING APPARATUS
Filed Oct. 29, 1937
5 Sheets-Sheet 5
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CORNELIUS A DESI/"ONE
Jess/w C woooroko,
2,131,705
Patented Sept. 27, 1938
UNITED STATES PATENT OFFICE
2,131,705
LIQUID DISPENSING APPARATUS
Cornelius A. Desimone, Bala Cynwyd, and Joseph
C. Woodford, Haverford, Pa., assignors to John
Wood Manufacturing Company, Inc., Consho
hocken, Pa., a corporation of Delaware
Application October 29, 1937, Serial No. 171,652
10 Claims. (Cl. 221—95)
Our invention is particularly applicable to me
tering pumps for dispensing gasolene, including a
hose through which the liquid is dispensed by
means of a pump driven by an electric motor;
5 a meter being included between the pump and
hose and connected with means for indicating the
volume of liquid dispensed through the meter;
such indicating means comprising a circular se
ries of numerals including zero. Such apparatus
10 is ordinarily provided with an electric switch
which may be manipulated by the dispensing op
erator to start and stop said motor, and also
manually operative means for resetting the indi
cator to zero position. Moreover, it is usual to
15 provide a switch operating lever which serves as
a support for the hose between successive dis
pensing operations and which is operated by the
weight of the hose to open the switch and stop
the motor. However, unless means are provided
20 to insure the return of the indicator to zero po
sition between successive dispensing operations
of such apparatus; an operator may accidentally
or intentionally fail to reset the indicator to zero
position and thus cheat the next customer to the
25 extent that the indicator is left advanced with
respect to its zero position.
Various means have been proposed to compel
or induce the operator to zeroize the indicator of
such apparatus between successive dispensing op
30 erations; varying from a mere sign on the appa
ratus warning the customer to be sure that the in
dicator is thus zeroized, to complicated locking
means for mechanically locking the apparatus at
the termination of one dispensing operation un
35 til it is unlocked by'zeroizing the indicator to per
mit the next succeeding dispensing operation.
It is the object and effect of our invention to
provide simpli?ed locking means for the purpose
last above described, and preferably in the form
40 of a unitary structure adapted for installation in
liquid dispensing apparatus of several commercial
forms which are not provided with any such
means for insuring that the indicator shall be
thus zeroized.
In the form of our invention chosen for illus
tration herein, the hook element for supporting
the hose in idle position is immovable and the
motor switch is connected with and controlled by
5
what we term a lock lever which cannot be used
to hold the switch closed, unless and until the
indicator is zeroized by complete operation of the
means for manually resetting the indicator to
zero position; whereupon the switch may be
55 closed by said lock lever, and is then held closed
by a spring stressed switch detent lever, until re
leased by manual operation of said lock lever.
Our invention includes the various novel fea
tures of construction and arrangement herein
after more de?nitely speci?ed.
5
In said drawings, Fig. I is a front elevation of
a metering ‘pump of what is known as the curb
stand type for dispensing gasolene and including
a convenient embodiment of our invention.
Fig. II is an elevation on a larger scale of the 10
mechanism including the hook support and lock
lever as shown projecting at the right hand side
of Fig. I.
Fig. III is an elevation of the opposite side of
the mechanism as shown in Fig. II.
15
Fig. IV is an elevation similar to Fig. III but
with the parts of the mechanism in a different
position.
a
Fig. V is an elevation of the mechanism as seen
from the left hand side of Fig. II and right hand 20
side of Fig. III, showing the indicator resetting
shaft carrying the cam dog in cooperative rela
tion with the cam lever of the mechanism shown
in Figs. II and III.
Fig. VI is a fragmentary elevation of parts of
the mechanism shown in Fig. V, but in a diiferent
position.
Referring to Fig. I, the liquid dispensing ap
paratus is mounted in the housing which is
adapted to be ?xed upon a pavement or platform
at a curb or driveway and includes the cast metal
base member I and top member 2 which are sub—
stantially rectangular and connected at their
corners by four cylindrical standards 3, and four
channel bars 4 which will serve to support a thin
sheet metal casing which is omitted from the
drawings, but which includes four substantially
?at panels extending vertically upon the four
sides of the housing. Said ‘frame standards 3 are
also cross-connected by transverse frame mem 46
bers 5, 6, and l, rigidly connected therewith by
U-bolts 3’.
The liquid to be dispensed is conveniently
stored in an underground tank from which it is
elevated through the pipe 9 by the operation of 4F
the pump Ill. Said pump includes a rotor having
the shaft H with the grooved pulley l2 connect
ed by the belt 13 with the grooved pulley H on
the shaft l5 of the electric motor I6, which is
supported by said transverse frame member 5. 50
The liquid is discharged from said pump HI
through the conduit l8 into the receptacle casing
19 in which air and vapor entrained in the liquid
are eliminated from the liquid and discharged
through the outlet conduit 20 which extends to 55
2
2,131,705
the top of the frame, from which the eliminated
fluid is discharged. The liquid passes from said
casing I! through the conduit 2| to the meter 22
from which it is discharged through the conduits
23 and 24. The conduit 24 is connected with a
10
?exible dispensing hose having the usual valve
controlled nozzle at its discharge end.
The hook 26, shown in Figs. 11, III and IV, is
a rigid part of the bracket 21, which is rigidly
connected with said transverse frame member 1,
and is provided to support the hose nozzle in idle
position. The lock lever 28 is fulcrumed on the
shaft 28’ which is held in the pair of bearing
lugs 21' on said bracket 21, Said lock lever 28
16 is pivotally connected with the vertically recipro
catory link 29 which is adjustably connected, by
the coupling 28' shown in Fig. I, with the switch
rod 38 for operating said switch in the box 38'.
The switch detent lever 3| is fulcrumed on the
20 stud 32 ?xed in the single bearing lug 21” on
said bracket 21, by the jam nut 32'. Said lock
lever 28 and switch rod 38 are continually stressed
toward the open position of said switch by said
detent lever 3|, under stress of the spring 3|’ ex
25 tending from the inner end of said detent lever
3| to the arm 27”’ on said bracket 21. Move
ment of said lock lever 28 by said spring 3|’ is
limited by contact of the under side of said lock
lever with the bottom of the slot 28" insald
30 bracket 21, through which said lever extends as
shown in Figs. 11 and III.
As shown in Fig. I; the shaft 33 which is turned
by the mechanism of the meter 22 drives com
35
puting registering mechanism including series of
decimally numbered wheels comprising indicat
ing mechanism covered by the face plate 34.
Said face plate 34 has windows 35 for displaying
numerals representing the price of gasolene. The
numerals displayed at said window 35 indicate the
price of gasolene to be twenty-seven and one-half
cents per gallon. Said indicator has windows 36
for displaying numerals representing the quanti
ty of gasolene dispensed but, as the indicator is
in zero position that fact is indicated by the
ciphers displayed. Said indicator has windows 3‘!
for displaying numerals representing the value
of the liquid dispensed at a single dispensing op
eration but, as the indicator is in zero position
that fact is manifested by the ciphers shown in
said windows. Said indicator has the single
window 38 for display of numerals of a total adder
representing the total quantity of liquid which
has been dispensed andhas the single window
39 for display of numerals of a total adder of
55 the value of all of the liquid which has been dis—
pensed. In the form of our invention shown the
indicator is provided with manually movable
shutters which are normally closed so that the
totals indicated by the adders behind the windows
60 38 and 38 are not visible.
The shaft 40 projecting at the left hand side
of Fig. I may be engaged by the removable crank
4|, in the custody of the operator, for resetting
the indicating mechanism to the zero position
65 shown, by rotation of said shaft 48 clockwise as
seen from the left hand side of Fig. I; and as
seen in Figs. V and VI.
8
Referring to Figs. I, V, and VI; loosely hung
upon the resetting shaft 40 near its right hand
70 end, is the cam dog 42 between the collars 43 and
45 which are ?xed on said shaft. Said collar 43
has the pin 46 rigidly connected therewith, pro
jecting toward the collar 45 and in the path of
said dog 42. Normally, that is to say, when the
75 indicator is not being reset and the apparatus is
in condition for dispensing liquid, said dog hangs
vertically, as shown in Fig. V, and the shaft 48
is in the rotary position shown in said ?gure and
the pin 46 is out of engagement with said dog
42. In that position, the point of the dog hangs
L1
in the notch 41’ of the cam lever 41, as shown in
Fig. V. Said lever 4'! is conveniently formed of
two pieces rigidly connected by rivets 48. The
piece having the notch 41' is L-shaped and the
other piece U-shaped. The bifurcations of the
latter, one of which is longer than the other, are
both hung on the fulcrum shaft 49 which is a stud
screwed into said bracket 21 at one end and
secured by_ the Jam nut 58. The longer bifurca
tion of said cam lever 41 has pivotally connected
therewith the upper end of the pendent link 5|,
as shown in Figs. II and V. Said link 5| is pivot
ally connected at its lower end with the latch 52
which is pivoted on the pin 53 ?xed in said
bracket 2'! and extending between the two lugs
21“ which are part of said bracket 21.
In the
normal position shown in Figs. I, II, and III, said
latch 52 is engaged and upheld by the latch 54
which is hung on the stud 55 ?xed in said arm
21"’ of the bracket 21. The spring 56 which ex
tends from the lower end of said link 5| to the
stud 54’ on said latch 54 continually stresses said
latch 54 toward its position of engagement with
said latch 52.
‘
Said lock lever 28 is conveniently formed of 30
two pieces which are rigidly connected by the
cap screws 51; the piece which includes the hub
encircling the fulcrum shaft 28’, having, in uni
tary relation therewith, the abutment 58 for en~
gagement by said latch 52 when the latter is re
Cl
leased from the latch 54. When said lock lever
28 is thus engaged by the latch 52; the lock lever
is inoperative. However, in the position shown in
Figs. II and III, the mechanism is in position to
be manipulated by the operator, to move it to 40
the position shown in Fig. IV, the latter being
the position in which the motor switch is closed,
by upward movement of the outer end of said
lock lever 28 and consequent downward thrust of
the link 28, to initiate a dispensing operation.
The piece of said lock lever 28 having the abut—
ment 58 thereon also has two arms 60 carrying
between them the lock roller 6| which is journaled
on the shaft 62. In the normal idle position
shown in Figs. II and III said roller 6| serves as
a stop limiting the upward movement of the
switch detent lever 3| under stress of the spring
3|’ which then holds the outer end of said lock
lever 28 in its lowermost position in which the
motor switch is open.
CI in
To move the parts from the normally idle
position shown in Figs. 11 and III to the dispens
ing position shown in Fig. IV; the operator pushes
up the outer end of said lock lever 28 to the posi
tion shown in Fig. IV : thus pushing down the 60
switch operating link 29 to the position shown in
Fig. IV, in which the switch is closed. During
that movement, said abutment 58 on the lock
lever 28 strikes the lower portion of said latch 54
and thrusts it, clockwise in Fig. II, out of engage 65
ment with the latch 52, and the successive turn
ing movement of said lock lever 28 thrusts the
detent lever 3| downward, stretching said spring
3|’, until the roller 6| is engaged in the locking
recess 6|’ in said switch detent lever 3|, as shown 70
in Fig. IV; in which position the switch is held
closed, against the stress of the spring 3| ', by said
lock lever 28 and its roller 6|.
When the dispensing operation is concluded;
the operator‘ may stop the motor and pump by 76
2,181,706
3
manually depressing the outer end of said lever
the normal idle position so that said slot is then
back to the position shown in Figs. II and III.
However, such manual movement of the lock
lever 28 does not otherwise restore the mecha
nism to the normal idle position shown in Figs.
II and III, because as shown in Fig. IV, the latch
52 is not only released from engagement with
the latch 54 but stressed by said spring 55 so that
when said lever 28 is pulled down at its outer
end to the position shown in Figs. II and III, the
substantially closed.
‘.
Said latch 52 is in fact a detent movable to
abutment 58 on the lock lever 28 is instantly en
gaged by said latch 52 so that said lock lever 28
is locked and cannot be uplifted at its outer end
to close said switch.
'
alternately detain and release the lock lever 28.
The pin 48 carried by said shaft 40 islin fact a
crank, and it and the dog 42 carried by said shaft
40 constitute rotary eccentric releasing means for
said detent means. The cam lever I 41 and the’
means for connecting it with said detent and
operating the latter, constitute automatically 0})
erative controlling means connecting said lock
lever 28 with the resetting means comprising the
shaft 48 and means for manually turning it.
However, other suitable detent and releasing
means may be employed.
15
Therefore, we do not desire to limit ourselves
That downward movement of the latch 52 by
the spring 56 tilts said cam lever 41 from the
position shown in Fig. V to the position shown in ' to the precise details of construction and ar
Fig. VI, incidentally idly turning the loose dog 42 rangement or method of operation herein set
to the position indicated in dash lines in Fig. V. forth, as it is obvious that various modi?cations
may be made therein without departing from the 20
20 The mechanism remains thus locked, to prevent
any dispensation of liquid until said indicator essential features of our invention as defined in
resetting shaft 40 is manually turned, clockwise, the appended claims.
We claim:
from its normal idle position shown in full lines
1. In liquid dispensing apparatus, the combi
in Fig. V, more than a complete revolution. Such
movement causes the pin 46 to pick up the loose nation with a pump operated by an electric 25
motor; of a switch in said motor circuit; an in
dog 42 and carry it over to the position shown in
Fig. VI, in which the dog is presented against dicator for manifesting the volume of liquid dis
pensed and movable with respect to a zero posi
the right hand inclined end of said cam lever 41
tion; switch controlling means, including a man
so that continued movement of said shaft, clock
ually operative lock lever for closing said switch, 30
30 wise, from the position shown in Fig. VI to the
position shown in dash lines in Fig. V, causes said detent means for preventing operation of said
cam dog 42 to depress the outer end of said cam lock lever unless and until said indicator is reset
to zero position after a dispensing operation, in~
lever 41 to its normal position shown in Fig. V.
In its movement from the position shown in Fig. cluding a latch for engaging said lock lever, a
cam lever, and a link connecting said latch with
35 VI to the position shown in Fig. V, said cam lever
41 lifts the link 5! and latch 52 until the free said cam lever; and manually operative means
left hand end of the latch 52, shown in Fig. II, for resetting said indicator to zero position, in
cluding a rotatable shaft and a cam relatively
is above the shoulder of the latch 54 and the
rotatable on said shaft and operatively related
latter is snapped, by its spring 56, into engage
to said cam lever; whereby said detent is released,
40 ment with said latch 52 as shown in Fig. II to
thereafter uphold it and permit the lock lever 28 by rotation of said cam, only when said indicator
is reset to zero, by rotation of said shaft.
to be manipulated to close the switch as above
2. In liquid dispensing apparatus, the combi
described.
As above noted, said resetting shaft 40 is turned nation with a pump operated by an electric motor,
15
more than a complete revolution from its normal
position shown in Fig. V to effect the resetting
of the indicator mechanism behind the plate 34,
to its zero position, by the gear 63, on said shaft
40, shown in Fig. I; incidentally resetting the
50 cam lever 41 from the position shown in Fig, VI
to the position shown in Fig. V. However, the
indicating mechanism, like that disclosed in Let
ters Patent of the United States No. 2,106,686,
granted to the present applicant Woodford Jan
55 uary 25, 1938, includes a spring which returns
the shaft 48, counter-clockwise with reference to
Fig. V, approximately forty-five degrees, leaving
the pin 46 in the position shown in Fig. V.
How
ever, the speci?c means for connecting said re
60 setting shaft 40 with said indicating mechanism
is not herein claimed.
As shown in Fig. I, the lock lever 28 projects
into the outer atmosphere through the sheet
metal casing inclosing the metering pump mech
65 anism and, consequently, the right hand face of
the bracket 21 as shown in Fig. II is exposed to
wind, rain, and snow. Therefore. it is desirable
to have the slot 28" through which said lever
projects fit the lever as closely as possible, both
70 in the position shown in Fig. II and in the posi
tion shown in Fig. IV. Therefore, we provide the
web 51 on the lever 28 for that purpose. It may
be observed with reference to Figs. II and III that
75 the web 51 fits closely in said slot 28" when in
of a switch in said motor circuit;v an indicator
for manifesting the volume of liquid dispensed
and movable with respect to a zero position;
switch controlling means, including a man-ually
operative lock lever for closing said switch, de
tent means for preventing operation of said lock
lever unless and until said indicator is reset to'
zero position after a dispensing operation, in
cluding a latch for engaging said lock lever, a
cam lever, and a link connecting said latch with
said cam lever, a second latch for engaging the
?rst mentioned latch, and a spring connecting
and continually stressing said two latches toward
their engaged position; and manually operative
means for resetting said indicator to zero posi
tion, including a rotatable shaft and a cam on
said shaft operatively related to said cam lever;
whereby said detent is released, by rotation of
said cam, only when said indicator is reset to
zero, by rotation of said shaft.
3. The combination with an electric switch, of
switch controlling means, including a manually
operative lock lever for closing‘said switch, de
tent means for preventing operation of said lock
lever; and means for releasing said detent means,
including a manually rotatable shaft, carrying a 70
rotatable eccentric, loosely journaled on said
shaft and operatively related to an element of
said detent means; and a crank pin rigidly con
nected with said shaft and operatively related to
said eccentric; whereby said detent is released 75
4
2,181,705
only when said shaft and eccentric have been manually operative lock lever for closing said
turned to a predetermined extent.
switch, detent means for preventing operation of
4. The combination with an electric switch, of .said lock lever, including a latch for engaging
switch controlling means, including a manually said lock lever, a cam lever, and a link connect
operative lock lever for closing said switch, de
ing said latch with said cam lever; a second latch
tent means for preventing operation of said lock for engaging the first mentioned latch, and a
lever, including a latch for engaging said lock spring connecting and continually stressing said
lever, a cam lever, and a link connecting said
latch with said cam lever; and means for releas
ii - ing said detent means, including a manually ro
tatable shaft, loosely carrying a relatively rotat
able eccentric, operatively related to an element
of said detent means; whereby said detent is re
leased only when said shaft and eccentric have
been turned to a predetermined extent.
5. The combination with an electric switch, of
switch controlling means, including a manually
operative lock lever for closing said switch, de
tent means for preventing operation of said lock
20 lever, including a latch for engaging said lock
lever, a cam lever, and a link connecting said
latch with said cam lever; a second latch for en
gaging the ?rst mentioned latch, and a spring
connecting and continually stressing said two
latches toward their engaged position; and means
for releasing said detent means, including a man
ually rotatable shaft, carrying a rotatable ec
centric, operatively related to an element of said
detent means, whereby said detent means is re
leased only when saidshaft and eccentric have
been turned to a predetermined extent.
6. Mechanism as in claim 5, wherein the ro
tatable eccentric includes a cam dog loosely jour
naled on said shaft, and a crank carried by said
35 shaft for picking up and turning said dog with
said shaft.
7. The combination with an electric switch, of
switch controlling means, including a recipro
catory rod directly connected with-a manually
40 operative lock lever for closing said switch, de
tent means for preventing operation of said lock
lever, including a latch for engaging said lock
lever, a cam lever, and a link connecting said
latch with said cam lever; and means for releas
ing said detent means, including a manually r0
tatable shaft, loosely carrying a relatively rotat
able eccentric, operatively related to an element
of said detent means; whereby said detent is re
leased only when said shaft and eccentric have
50 been turned to a predetermined extent.
8. The combination with an electric switch, of
switch controlling means, including a recipro
catory rod directly pivotally connected with a
two latches toward their engaged position; and
means for releasing said detent means,.includ
ing a manually rotatable shaft, carrying a rotat
able eccentric, operatively related to an element
of said detent means, whereby said detent is re
leased only when said shaft and eccentric have
been turned to a predetermined extent.
9. In a control device for liquid dispensing ap ll
paratus, the combination of a meter having a
registering mechanism, means for resetting the
mechanism to zero'position, means for deliver
ing liquid through the meter, including a pump
and an electric switch controlling the operation 20
of said pump; said meter having a liquid dis
charge conduit terminating in a nozzle; a sta
tionary support for the nozzle when not in use;
switch controlling means, including a manually
operative lock lever for closing said switch; said
lock lever being operable independently of said
hose support; detent means for preventing opera
tion of said lock lever, including a latch for en
gaging said lock lever, a cam lever, and a link
connecting said latch with said cam lever; a sec
ond latch, for engaging the first mentioned latch,
both of said latches being operable independently
of said hose support; a spring connecting and
continually stressing said two latches toward their
engaged position; and means for releasing said
detent means, including a manually rotatable
shaft, for resetting said register to zero position;
a rotatable eccentric, journaled on said shaft, and
alternately movable by and independently of said
shaft, said eccentric being operatively related to
an element of said detent means, whereby said
detent means is released only when said shaft
and eccentric have been turned to an extent suf
ficient to zeroize said register.
10. Mechanism as in claim 2, wherein the ro 45
tatable eccentric includes a cam dog loosely jour
naled on said shaft, and a crank rigidly connect
ed with said shaft for picking up and turning said
dog with said shaft, in cooperative relation with
said cam lever.
CORNELIUS A. DESIMONE.
JOSEPH C. WOODFORD.
60
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